Online CSV to JSON Converter
CSV Input
JSON Output
Drag & drop or click to upload CSV/TSV file, or paste content
Awaiting Conversion
JSON output will appear here
Drag & drop or click to upload CSV/TSV file, or paste content
JSON output will appear here
Our browser-based converter makes it easy to transform tabular data into structured JSON without compromising your privacy.
Paste your CSV text or upload a .csv/.tsv file. Our tool automatically detects the delimiter and encoding.
Choose your output structure (Array, Keyed, or Nested) and toggle type inference for better data accuracy.
Copy the result, download as a .json file, or open it directly in our professional JSON Formatter.
A: Yes, completely free.
A: All processing happens in your browser. No file is uploaded.
A: Up to 100MB supported.
A: Comma, semicolon, tab, pipe, or custom.
A: Yes, select Tab as delimiter or upload a .tsv file.
A: Yes, supports UTF-8, Latin-1, and Windows-1252 encoding.
Working with tabular data? Try CSV ↔ JSON Converter
Traditional online converters often upload your data to a server for processing. This is a security risk when handling sensitive customer lists, config files, or proprietary data.
100% Client-Side
All processing happens in your browser's memory. No file ever leaves your device.
Large File Handle
Optimized with Web Workers to handle files up to 100MB without freezing your browser UI.
Type Control
Independently control how numbers, booleans, and null values are inferred during conversion.